About this item 1-EXTRA BASS for deep, punchy sound 2-Sound Diffusion Processor expands sound far and wide 3-Waterproof and dustproof (IP67 rated). Supported Codecs: SBC, AAC 4-Up to 16 hours of battery life with indicator 5-Compact portable design with multiway strap included 6-Add an extra speaker for stereo sound 7-Connect and stream music easily with Bluetooth 8-Convenient hands-free calling, Frequency Transmission Range - 20 Hz–20,000 Hz (Sampling frequency 44.1 kHz) 9-USB Type-C port